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Patent Agency Ranking
公开(公告)号：US20220006627A1
公开(公告)日：2022-01-06
申请号：US17069073
申请日：2020-10-13
Inventor： Haeng-Seok KO , Se Wan JI , Younchang JEONG , Osung KWON , Seok KIM , Eun Ji KIM , Changho HONG , Jingak JANG , Daesung KWON
Abstract: A quantum key distribution (QKD) node apparatus and a QKD method therein. The QKD node apparatus may include a QKD module for generating quantum keys and quantum key IDs, a quantum key synchronization management module for storing the quantum keys and the quantum key IDs as outbound and inbound quantum keys in a distributed manner and sharing the outbound and inbound quantum keys with a second QKD node apparatus, and a quantum key orchestration module for delivering a master key and a master key ID to a secure application connected therewith in response to a request for the master key with the ID of a second secure application and delivering a packet including the master key encrypted with the outbound quantum key shared with the second QKD node apparatus, the master key ID, and a quantum key ID, to the second QKD node apparatus.
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公开(公告)号：US20210266157A1
公开(公告)日：2021-08-26
申请号：US16887170
申请日：2020-05-29
Inventor： Changho HONG , Nayoung KIM , Osung KWON , Younchang JEONG , Se Wan JI , Eun Ji KIM , Seok KIM , Jingak JANG , Daesung KWON
Abstract: A quantum entity authentication apparatus and method. The quantum entity authentication apparatus includes a quantum state preparation unit for preparing an authentication quantum state that is generated based on an authentication key previously shared with an entity, a quantum channel verification unit for transmitting a quantum state, generated by performing an operation using a prestored unique operator on the authentication quantum state, to a quantum measurement device, and for verifying security of a quantum channel by using a result of Bell measurement and the authentication quantum state, the result of Bell measurement being revealed by the quantum measurement device for the quantum state, and a quantum entity authentication unit for, when the security of the quantum channel is verified, authenticating the entity using the result of the Bell measurement and the unique operator.
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公开(公告)号：US20200313879A1
公开(公告)日：2020-10-01
申请号：US16554850
申请日：2019-08-29
Inventor： Changho HONG , Nayoung KIM , Osung KWON , Younchang JEONG , Se Wan JI , Jingak JANG , Daesung KWON
Abstract: An apparatus and method for quantum direct communication using single qubits. The apparatus includes a quantum state preparation unit for preparing quantum states including a message state prepared using pairs of single qubits based on a bit of a message to be sent to a communication partner, an authentication state prepared using random qubit pairs, and a verification state prepared using random qubit pairs, a quantum state communication unit for transmitting the quantum states to the communication partner and measuring a quantum state of a message received from the communication partner, an authentication unit for authenticating, using the authentication state, the communication partner depending on whether an authentication key previously shared with the communication partner is possessed, a verification unit for verifying security of a quantum channel using the verification state, and a message restoration unit for restoring the received message using the message state.
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公开(公告)号：US20190327095A1
公开(公告)日：2019-10-24
申请号：US16183934
申请日：2018-11-08
Inventor： Changho HONG , Nayoung KIM , Osung KWON , Se Wan JI , Haeng-Seok KO , Jingak JANG , Daesung KWON
Abstract: An apparatus and method for a reliable quantum signature. The method using the apparatus for a reliable quantum signature includes preparing a quantum signature by sharing a first secret key and a first Bell state with a signer's terminal device and by sharing a second secret key and a second Bell state with a verifier's terminal device; signing, by the signer's terminal device, a message with the quantum signature using a first encoding value, the first secret key, and the first Bell state; verifying, by the apparatus, the quantum signature of the message using the first encoding value, the first secret key, and the first Bell state; and finally verifying, by the apparatus, the quantum signature of the message using the verifier's terminal device, a second encoding value, a third encoding value, the second secret key, and the second Bell state.
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15.发明申请公开(公告)号：US20140355755A1
公开(公告)日：2014-12-04
申请号：US14155756
申请日：2014-01-15
Inventor： Deukjo HONG , Dong-Chan KIM , Jung Keun LEE , Daesung KWON
IPC: H04L9/28
CPC classification number: H04L9/0643 , H04L2209/38
Abstract: An apparatus and method for performing a compression operation in a fast message hash algorithm, which receive a 512-bit message and 512-bit chaining variable data, repeatedly calculate a 128-bit register-based step function, and then produce updated 512-bit chaining variable data. For this, the apparatus for performing a compression operation in a hash algorithm includes a message extension unit for receiving a message and generating a plurality of extended messages. A chaining variable initial conversion unit receives chaining variable data and converts the chaining variable data into initial state data. A step function operation unit repeatedly calculates a step function based on the initial state data and the plurality of extended messages and produces final state data. A chaining variable final conversion unit generates updated chaining variable data from the chaining variable data using the final state data, and outputs the updated chaining variable data.
Abstract translation: 一种用于在快速消息散列算法中执行压缩操作的装置和方法，其接收512位消息和512位链接可变数据，重复计算128位基于寄存器的步进功能，然后产生更新的512位 链接可变数据。 为此，用于在散列算法中执行压缩操作的装置包括用于接收消息并生成多个扩展消息的消息扩展单元。 链接变量初始转换单元接收链接变量数据并将链接变量数据转换为初始状态数据。 步进功能操作单元基于初始状态数据和多个扩展消息重复计算阶梯函数，并产生最终状态数据。 链接变量最终转换单元使用最终状态数据从链接变量数据生成更新的链接变量数据，并输出更新的链接变量数据。
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